Google Tag Manager lets you add and update your website tags, easily and for free, whenever you want, without bugging the IT folks. Google Tag Manager’s easy to use error checking and speedy tag loading mean you’ll always know that every tag works.
Google Tag Manager is a powerful, free tool that enables marketers to control digital marketing data by using code snippets on any website. It can be used for conversion tracking, website analytics, retargeting, and many more tracking purposes
The Google Tag Manager allows you to update two things: Tags on your website. This includes marketing and optimization tags including Google Analytics, AdWords conversion tracking, and Floodlight counter, etc.
Google Tag Manager is a tag management system that allows you to quickly and easily update tracking codes and related code fragments collectively known as "tags" on your website or mobile app.